basically got a upper inlet manifold (not ford) thats been made simply out of 4mm Mild steel box section for a project, got all the bits to do it bar the actual cutting out of the ports for the lower inlet which bolts to the head

tried a few companies locally, but they can cut the ports, which are oval, which match up to the lower inlet (got a gasket as a guide for it)

as they reckon plasma cutting wont work ?, and to cut them out manually is going to be a nightmare ?

any ideas

jr